A stage lift raises scenery vertically at a steady speed. In the first stage, the lift exerts an upward force of 1.2 kN1.2\ \mathrm{kN}1.2 kN while raising the scenery through 1.5 m. At an intermediate level, more scenery is added. The lift then exerts an upward force of 1.6 kN1.6\ \mathrm{kN}1.6 kN as it continues to the upper level. The total work done during both stages is 6.6 kJ.
Calculate the vertical height between the intermediate level and the upper level.
115 exam-style questions on Edexcel GCSE Physics 8.1 Energy transfers and work, covering 8.1.1 Energy stores and transfer diagrams, 8.1.2 Ways of changing a system's energy, and 8.1.3 Work done by forces. Each one has a worked solution and a mark scheme showing where the marks go.